S31803 Duplex Steel Elbow Pipe Fitting Elbow Concentric Eccentric Reducer, Straight Reducing Tee, Cap,Threadolet, Plug

• Overview

  S31803 duplex steel is a nitrogen-enhanced duplex stainless steel alloy that comprises 21% chromium, 2.5% molybdenum, and 4.5% nickel along with nitrogen additions. This unique composition offers exceptional properties and performance.

  The yield strength of S31803 duplex steel is remarkable, being twice as high as that of austenitic stainless steel. This significant strength advantage allows for product designers to reduce the weight of their creations, which in turn gives this alloy a cost-effective edge compared to grades like 316L or 317L. Specifically, S31803 is ideally suited for applications within the temperature range of -50 °F to +600 °F. Although it can be considered for use outside this range, there are limitations, particularly when dealing with welded structures.

  The exceptional performance characteristics of S31803 duplex steel have contributed to its widespread application, making it the most commonly used grade in the duplex steel category.

  Physical and Mechanical Properties of S31803 Duplex Stainless Steel

  S31803 duplex steel's dual-phase density stands at 8.0g/cm3. It possesses a tensile strength of σ B ≥ 620Mpa, ensuring robust performance under various loads. The yield strength of this alloy is σ 0.2 ≥ 450Mpa, highlighting its capacity to withstand deformation without breaking. Furthermore, the elongation rate of S31803 duplex steel is δ ≥ 25%, indicating its ability to undergo significant plastic deformation before fracture.

• Chemical Composition

• Pipe fittings Size

• Application

• Our company can produce carbon steel, stainless steel, and alloy steel pipe fittings according to standards such as ASME/ANSI, JIS, DIN, ISO etc. The varieties include equal diameter tees, reducing tees, tees, elbows, cross, concentric reducer, eccentric reducer etc.

We provide the very best quality pipe and fittings, prompt delivery and reliable services at competitive prices.

Established in 2018 with a registered capital of 300 million yuan, Beijing Hownew Energy Technology Group Co., Ltd. owns three holding subsidiaries: Cangzhou Yuantuo Piping Equipment Co., Ltd., Beijing Shenfupeng Piping Equipment Development Co., Ltd., and Hownew Technology (Hong Kong) Co., Ltd. Hownew Group is a comprehensive enterprise integrating technology research and development, product manufacturing, production and sales, plus installation and maintenance. It specializes in providing professional piping and pipe fittings, as well as piping design, manufacturing, and installation and maintenance services for domestic and international boiler, power, chemical, gas, and solar thermal industries.
The company always adheres to the working attitude of "honesty and realism, professionalism and concentration, pragmatism and efficiency", and takes technical strength as the foundation, resource background as the basis for development, and customer needs as the future trend. It closely follows the characteristics of industry technology and industry development, and continuously optimizes the design. The company is dedicated to providing customers with the highest quality and most satisfactory services.

Hownew Technology (Hong Kong) Co., Ltd.: In 2019, in response to the national initiative of "One Belt and One Road" and the Group's expansion into international markets, Hownew Group established Hownew Technology (Hong Kong) Co., Ltd. in Hong Kong. This serves as the Group's platform for international business development. The company mainly offers pipes and pipe fittings (carbon steel, stainless steel, alloy steel) such as elbows, tees, bends, reducers, and crosses to industries such as power, petrochemical, chemical, petroleum, gas, solar thermal, and shipbuilding. All products adhere to American standard ASME (ANSI), European standard EN, German standard DIN, Japanese standard (JIS), and can also be customized according to specific customer needs.